Takema yoshioka



ay 21, 1957 TAKEMA YOSHIOKA 2,792,995

CRUSHER WITH ADJUSTABLE GRANULATING REGULATORS Filed April 1, 1955 INVENTOR TAKE MA YOSHlKA ATTORNEY .UnitedStates Patent O CRUSHER ADJUSTABLE GRANULATING REGULATORS Takema Yoshioka, Kochi (City), Japan A p ion Ap i 5 eria1No. 498,12

2 Claims. (Cl. 241-489) This invention relates to an improved crusher which performs the dual functions of pulverizing and regulating the degree of fineness of the pulverized material.

The object of this invention is to provide an improve ment over ordinary crushers which can only pulverize sand, stone and the like, but cannot regulate the size of the pulverized material.

The present invention refers to an improved crusher for the production of fine sand, stone and the like which, together with pebbles of large, medium and small sizes, is essential for the construction of the concrete darn embankment and various concrete works, but hardly obtainable on beach and river-bed.

For the purpose of product-ion of fine sand, stone and the like, the improved crusher of the present invention is equipped with one or more flatshaped granulating regulators that possess the special features of sliding capacity for the adjustment of the space between the afore-mentioned regulators and rotating hammers and also of changeability in the angle of inclination.

The object is to produce the type of fine sand, stone and the like absolutely necessary for the construction of concrete embankment and other constructions by pulverizing any common sand, stone and the like, which is readily obtainable on beach and river-bed.

In the case of an ordinary type of crusher, it merely pulverizes the pebbles by means of the high-speed rotating hammers but is incapable of regulating the degree of fineness as desired. Therefore, it is inadequate for the purpose of producing the fine sand that is scarce on the beach and river-bed. Naturally, once the common sand is pulverized it has to be sieved with different'sieves. Only after sorting it into diiferent degrees of fineness it is thoroughly mixed in proportion suitable for particular requirement. Thus, not only would it require more time and labour but also the ordinary crusher would provide the large sized sand, stone and the like in excessive quantity while the finer ones are most lacking in quantity. Therefore, the large sized has to be dealt with and pulverized repeatedly, which is the drawback of the ordinary known crusher and its achievement is less efficient.

The drawback just mentioned has been eliminated in the present invention wherein the improved crusher encases the high speed rotating hammers together with one or several granulating regulators within its body. The said regulators are made moveable so that the distance between the regulators and the rotating hammers can be varied. The pulverized sand, stone and the like is made to pass through the space between the regulators and the rotating hammers. Hence the size of the pulverized material is controlled and determined by regulating the space between the regulators and the rotating hammers.

According to this invention, an improved crusher with granulating regulator or regulators, comprising high speed rotating hammers together with one or more granulating regulators, the said regulators being made moveable so as to be near to or distant from the rotating hammers, is

2,792,995 Patented May 21;, 1957 characterisedin that the size of the pulverized sand, stone and the like can be regulated by adjusting. the distance between the granulating regulators and the rotating hammers.

Another feature of the improved crusher of the present invention is that the granulating regulators are made flat shaped and are installed in a radial formation within the crusher body.

A further feature of the improved crusher of the present invention is that the distance between the rotating hammers and granulating regulators is adjustable to a de-- sired degree on account of the movability of the said regulators.

- It is to be understood that not only sand and stone, but any other granular material can be pulverized to a definite fineness, with the help of the present improved crusher.

The invention is. now illustrated in the accompanying drawings; throughout which like reference numerals indicate corresponding parts in various figures.

In the drawings:

Fig. 1 shows a plan view of the improved crusher.

Fig. 2 shows a sectional view of the same.

Fig. 3 illustrates the position and function of a regulator of the improved crusher.

In Fig. 2, the sand, stone and the like are fed through the hopper 9 inside the crusher. The crusher body 2 encases the rotating hammers 1. The flat-shaped granulating regulators 3 are attached to the movable rests 4. These movable rests 4 are connected to body 2 by bolts 5. The rests 4 are fixed to the regulators 3 by means of bolts 6. The bolts 7 (Fig. 1) fix the rests 4- to the body 2. The inclination of the regulators can be changed with the help of the bolts 6. The bolts 8 move the regulators 3 either forward or backward and thus can adjust the distance between the regulators and the rotating hammers. 10 indicates a projected portion on the body 2 having a groove for housing and positioning the rests 4.

The crusher encases within its body 2 the high-speed rotating hammers 1 together with one or several granulating regulators 3. The said regulators are made movable so as to be near to or distant from the rotating hammers 1 and also to eifect changes in the angle of inclination. In the case of the regmlators 3 coming closer to the rotating hammers 1, the sand, stone and the like that is fed through the hopper 9 is smashed and pulverized by the said hammers l and driven forcefully against the regulators 3 to receive further pulverization. However, when the regulators 3 are manipulated away from the rotating hammers 1 leaving more space, the hammers 1 would pulverize the material to the sizes according to the spaces in between the regulators 3 and the rotating hammers 1. Some parts of the material fed through the hopper 9 would be smashed against the regulators 3 to receive further treatment while the remaining portion drops out through the opening without hitting much of the regulators 3. Therefore, when compared with. previous instance, less quantity of fine sand, stone and the like will be obtained.

Moreover, when the regulators 3 are made to incline as illustrated in Fig. 3 and adjusted suitably for the desired purpose, the sand, stone and the like is pulverized by the hammers 1 that would cause it to strike against the regulators 3 at right angles and be made finer by being subjected to further force. On the other hand, when the regulators 3 are inclined as indicated by dotted lines in the same Fig. 3, the sand, stone and the like, after being pulverized by the hammers 1 would strike against them obliquely, thus receiving less force of impact which would be considerably smaller than in the previous case. Correspondingly the degree of fineness would be ditferent.

In the manner as described in the foregoing paragraphs, the sand, stone and the like material of required fineness t 3 is readily obtainable by the processes of pulverizing with hammers in the initial stage and of smashing against the granulating regulators in the subsequent stage.

It is to be understood that the invention is not limited to the embodiments shown in the accompanying drawings but various other embodiments of the present invention are possible without departing from the scope of the invention which is claimed hereafter.

I claim:

1. A crusher comprising a generally cylindrical shaped body, a casing having a horizontal axis carrying high speed rotating hammers, a hopper mounted thereon at the top of the casing and having a discharge portion directed downwardly in the direction of rotation of the hammers, said hammers being encased within the body and mounted beneath said hopper, circumferentially spaced moveable rests connected to said body at one side of said rotating hammers, a plurality of flat shaped granulating regulators installed in a radial formation and attached to the movcable rests, means for pivotally inclining the granulating regulators in a substantial radial position so that the pulverized material strikes against same substantially at right angles to efiect the maximum degree of fineness or vaway from the discharge of the hopper so that the material strikes against same obliquely to thereby etfect a lesser degree of finess.

2. A crusher according to claim 1 wherein the moveable rests are adjustably mounted on projecting portions of the body having facing grooves for housing and positioning the rests. a I

' References Cited in the file of this patent UNITED STATES PATENTS Clawson June 23, 1953 OTHER REFERENCES American Miller and Processor, January 1949, p. 167. 

